/b/sixpacksmackdown/posts/workout-review-usplabs-back-biceps-core-blast Great workout from USPlabs Back, Biceps, Core Blast. I performed this workout and it left me with a pretty good pump. The workout starts off focusing on the core and back, and then moves into a biceps circuit and really puts your arms to work. I likeen-USTelligent Community 11 Non-Production